		* {
		    margin: 0;
		    padding: 0;
		    box-sizing: border-box;
		    font-family: 'Microsoft YaHei', sans-serif;
		}
		
		body {
		    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
		    min-height: 100vh;
		    overflow-x: hidden;
		}
		
		/* 导航栏样式 */
		.navbar {
		    width: 100%;
		    height: 70px;
		    background: white;
		    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
		    display: flex;
		    justify-content: space-between;
		    align-items: center;
		    padding: 0 8%;
		    position: fixed;
		    top: 0;
		    z-index: 1000;
		}
		
		.navbar-logo {
		    font-size: 24px;
		    font-weight: bold;
		    color: #3a5fcd;
		    text-decoration: none;
		    display: flex;
		    align-items: center;
		}
		
		.navbar-logo img {
		    height: 40px;
		    margin-right: 10px;
		}
		
		.nav-links {
		    display: flex;
		    gap: 30px;
		}
		
		.nav-links a {
		    color: #555;
		    text-decoration: none;
		    font-weight: 500;
		    position: relative;
		    padding: 5px 0;
		    transition: all 0.3s ease;
		}
		
		.nav-links a:hover {
		    color: #3a5fcd;
		}
		
		.nav-links a.active {
		    color: #3a5fcd;
		    font-weight: 600;
		}
		
		.nav-links a.active:after {
		    content: '';
		    position: absolute;
		    bottom: 0;
		    left: 0;
		    width: 100%;
		    height: 3px;
		    background: #3a5fcd;
		    border-radius: 3px;
		}
		
		/* 主体内容 */
		.main-content {
		    padding-top: 70px;
		    display: flex;
		    justify-content: center;
		    align-items: center;
		    min-height: calc(100vh - 70px);
		}
		
		/* 认证容器 */
		.auth-container {
		    position: relative;
		    width: 420px;
		    padding: 40px;
		    background: rgba(255, 255, 255, 0.15);
		    backdrop-filter: blur(12px);
		    border-radius: 20px;
		    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.1);
		    border: 1px solid rgba(255, 255, 255, 0.2);
		    z-index: 1;
		    transition: all 0.3s ease;
		    margin: 30px 0;
		}
		
		.auth-container:hover {
		    transform: translateY(-5px);
		    box-shadow: 0 30px 50px rgba(0, 0, 0, 0.15);
		}
		
		.auth-header {
		    text-align: center;
		    margin-bottom: 30px;
		}
		
		.auth-header h2 {
		    color: white;
		    font-size: 28px;
		    margin-bottom: 10px;
		}
		
		.auth-header p {
		    color: rgba(255, 255, 255, 0.8);
		    font-size: 14px;
		}
		
		/* 输入框组 */
		.input-group {
		    position: relative;
		    margin-bottom: 25px;
		}
		
		.input-group input {
		    width: 100%;
		    padding: 15px 20px;
		    background: rgba(255, 255, 255, 0.2);
		    border: none;
		    border-radius: 35px;
		    font-size: 16px;
		    color: white;
		    outline: none;
		    transition: all 0.3s ease;
		}
		
		.input-group input:focus {
		    background: rgba(255, 255, 255, 0.3);
		}
		
		.input-group input::placeholder {
		    color: rgba(255, 255, 255, 0.7);
		}
		
		.input-group label {
		    position: absolute;
		    top: 15px;
		    left: 20px;
		    color: rgba(255, 255, 255, 0.7);
		    pointer-events: none;
		    transition: all 0.3s ease;
		}
		
		.input-group input:focus + label,
		.input-group input:valid + label {
		    top: -10px;
		    left: 15px;
		    font-size: 12px;
		    background: rgba(255, 255, 255, 0.3);
		    padding: 0 10px;
		    border-radius: 10px;
		}
		
		/* 密码强度指示器 */
		.password-strength {
		    height: 4px;
		    background: rgba(255, 255, 255, 0.2);
		    margin-top: 8px;
		    border-radius: 2px;
		    overflow: hidden;
		}
		
		.password-strength:after {
		    content: '';
		    display: block;
		    height: 100%;
		    width: 0;
		    background: #ff4757;
		    transition: width 0.3s ease;
		}
		
		.input-group input[type="password"]:focus ~ .password-strength:after {
		    width: 33%;
		}
		
		.input-group input[type="password"].medium ~ .password-strength:after {
		    width: 66%;
		    background: #ffa502;
		}
		
		.input-group input[type="password"].strong ~ .password-strength:after {
		    width: 100%;
		    background: #2ed573;
		}
		
		/* 记住我/忘记密码 */
		.remember-forgot {
		    display: flex;
		    justify-content: space-between;
		    align-items: center;
		    margin-bottom: 25px;
		    font-size: 14px;
		    color: rgba(255, 255, 255, 0.8);
		}
		
		.remember-forgot label {
		    display: flex;
		    align-items: center;
		    cursor: pointer;
		}
		
		.remember-forgot input {
		    margin-right: 5px;
		    accent-color: white;
		}
		
		.remember-forgot a {
		    color: white;
		    text-decoration: none;
		    transition: all 0.3s ease;
		}
		
		.remember-forgot a:hover {
		    text-decoration: underline;
		}
		
		/* 条款同意 */
		.terms-agree {
		    display: flex;
		    align-items: center;
		    margin-bottom: 25px;
		    font-size: 14px;
		    color: rgba(255, 255, 255, 0.8);
		}
		
		.terms-agree label {
		    margin-left: 5px;
		    cursor: pointer;
		}
		
		.terms-agree a {
		    color: white;
		    text-decoration: none;
		    transition: all 0.3s ease;
		}
		
		.terms-agree a:hover {
		    text-decoration: underline;
		}
		
		/* 认证按钮 */
		.auth-btn {
		    width: 100%;
		    padding: 15px;
		    background: white;
		    border: none;
		    border-radius: 35px;
		    font-size: 16px;
		    font-weight: 600;
		    color: #667eea;
		    cursor: pointer;
		    transition: all 0.3s ease;
		}
		
		.auth-btn:hover {
		    background: rgba(255, 255, 255, 0.9);
		    transform: translateY(-2px);
		    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
		}
		
		/* 切换链接 */
		.auth-switch {
		    text-align: center;
		    margin-top: 25px;
		    color: rgba(255, 255, 255, 0.8);
		    font-size: 14px;
		}
		
		.auth-switch a {
		    color: white;
		    font-weight: 600;
		    text-decoration: none;
		    transition: all 0.3s ease;
		}
		
		.auth-switch a:hover {
		    text-decoration: underline;
		}
		
		/* 建议框 */
		.suggestions {
		    position: absolute;
		    width: 100%;
		    background: rgba(255, 255, 255, 0.9);
		    border-radius: 0 0 15px 15px;
		    max-height: 150px;
		    overflow-y: auto;
		    display: none;
		    z-index: 10;
		}
		
		.suggestions div {
		    padding: 10px 20px;
		    cursor: pointer;
		    color: #333;
		    transition: all 0.2s ease;
		}
		
		.suggestions div:hover {
		    background: rgba(102, 126, 234, 0.2);
		}
		
		/* 响应式设计 */
		@media (max-width: 768px) {
		    .navbar {
		        padding: 0 5%;
		    }
		    
		    .nav-links {
		        gap: 15px;
		    }
		    
		    .auth-container {
		        width: 90%;
		        padding: 30px;
		    }
		}
        /* 成功提示 */
        .alert-success {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: rgba(0, 0, 0, 0.8);
            color: white;
            padding: 20px 40px;
            border-radius: 10px;
            z-index: 9999;
            display: none;
            animation: fadeIn 0.5s;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }